Enum sp_mmr_primitives::DataOrHash
source · pub enum DataOrHash<H: Hash, L> {
Data(L),
Hash(H::Output),
}
Expand description
An element representing either full data or its hash.
See Compact to see how it may be used in practice to reduce the size of proofs in case multiple LeafDataProviders are composed together. This is also used internally by the MMR to differentiate leaf nodes (data) and inner nodes (hashes).
DataOrHash::hash method calculates the hash of this element in its compact form, so should be used instead of hashing the encoded form (which will always be non-compact).
Variants§
Implementations§
source§impl<H: Hash, L: FullLeaf> DataOrHash<H, L>
impl<H: Hash, L: FullLeaf> DataOrHash<H, L>
sourcepub fn hash(&self) -> H::Output
pub fn hash(&self) -> H::Output
Retrieve a hash of this item.
Depending on the node type it’s going to either be a contained value for DataOrHash::Hash node, or a hash of SCALE-encoded DataOrHash::Data data.
Trait Implementations§
source§impl<H: Clone + Hash, L: Clone> Clone for DataOrHash<H, L>where
H::Output: Clone,
impl<H: Clone + Hash, L: Clone> Clone for DataOrHash<H, L>where
H::Output: Clone,
source§fn clone(&self) -> DataOrHash<H, L>
fn clone(&self) -> DataOrHash<H, L>
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresource§impl<H, L> Debug for DataOrHash<H, L>
impl<H, L> Debug for DataOrHash<H, L>
source§impl<H: Hash, L: FullLeaf + Decode> Decode for DataOrHash<H, L>
impl<H: Hash, L: FullLeaf + Decode> Decode for DataOrHash<H, L>
source§fn decode<I: Input>(value: &mut I) -> Result<Self, Error>
fn decode<I: Input>(value: &mut I) -> Result<Self, Error>
Attempt to deserialise the value from input.
§fn decode_into<I>(
input: &mut I,
dst: &mut MaybeUninit<Self>,
) -> Result<DecodeFinished, Error>where
I: Input,
fn decode_into<I>(
input: &mut I,
dst: &mut MaybeUninit<Self>,
) -> Result<DecodeFinished, Error>where
I: Input,
Attempt to deserialize the value from input into a pre-allocated piece of memory. Read more
§fn skip<I>(input: &mut I) -> Result<(), Error>where
I: Input,
fn skip<I>(input: &mut I) -> Result<(), Error>where
I: Input,
Attempt to skip the encoded value from input. Read more
§fn encoded_fixed_size() -> Option<usize>
fn encoded_fixed_size() -> Option<usize>
Returns the fixed encoded size of the type. Read more
source§impl<H: Hash, L: FullLeaf> Encode for DataOrHash<H, L>
impl<H: Hash, L: FullLeaf> Encode for DataOrHash<H, L>
source§impl<H: Hash, L> From<L> for DataOrHash<H, L>
impl<H: Hash, L> From<L> for DataOrHash<H, L>
source§impl<H: PartialEq + Hash, L: PartialEq> PartialEq for DataOrHash<H, L>where
H::Output: PartialEq,
impl<H: PartialEq + Hash, L: PartialEq> PartialEq for DataOrHash<H, L>where
H::Output: PartialEq,
source§fn eq(&self, other: &DataOrHash<H, L>) -> bool
fn eq(&self, other: &DataOrHash<H, L>) -> bool
This method tests for
self
and other
values to be equal, and is used
by ==
.impl<H: Hash, L> StructuralPartialEq for DataOrHash<H, L>
Auto Trait Implementations§
impl<H, L> Freeze for DataOrHash<H, L>
impl<H, L> RefUnwindSafe for DataOrHash<H, L>where
L: RefUnwindSafe,
<H as Hash>::Output: RefUnwindSafe,
impl<H, L> Send for DataOrHash<H, L>where
L: Send,
impl<H, L> Sync for DataOrHash<H, L>where
L: Sync,
impl<H, L> Unpin for DataOrHash<H, L>
impl<H, L> UnwindSafe for DataOrHash<H, L>where
L: UnwindSafe,
<H as Hash>::Output: UnwindSafe,
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T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
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impl<T> CloneToUninit for Twhere
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